Advanced geometry for high schools : synthetic and analytical (1919)
McDougall, A. H. (Alexander Hiram), 1859-1946 · Toronto : Copp, Clark · leaf 35
KE ofcircle ABC and the radius IN of theinscribed circle. Draw BE, BK, Bl. Show that A BEK III A NAI, and rt. * . Al KE- that .. W = Kg. or, Al . KB = 2Rr.Show that KB = Kl, and that .«.Al . IK = 2Rr.) Hence, using Ex. 6, Page 256,O.H.S. Geometry, show that, if S be the circumcentre ofA ABC, SI2 =… … RADICAL AXIS 23 Radical Axis 18. The locus of the points from which tangentsdrawn to two circles are equal to each other is calledthe radical axis of the two circles. 19. If two circles cut each other, their commonchord produced is the radical axis. [Proof left for the pupil]
Geometry · Geometry, Analytic
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